Instrument makers’ catalogues can be important sources of iconography: they indicate what instruments people were making and buying at a given place and time, and sometimes they depict rare curiosities like the brass instruments in this 1867 catalogue from the Gautrot firm, reprinted in 1999 by Larigot. The mechanical organ pictured above comes from a catalogue issued by Limonaire Frères around the turn of the twentieth century, reprinted in 2009 by Das mechanische Musikinstrument.